A B Cron Portal - Auston B. Cron
GeoGebra applets by a teacher who has taught high school and early college students since 1970, and uses his dynamic geometry animations and interactive sketches in his classes to teach angle sums; perimeters and areas of rectangles and squares; reference
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CalculusABC.com - Chris Watson
A site for calculus teachers to share questions they've written and discuss
issues relating to the field. Sort multiple choice questions according to calculator use and representation type (verbal, numerical, analytical, or graphical). With web forums
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Center for Innovative Learning Technologies (CILT)
Joining forces and leveraging resources to improve K-14 education. Four theme areas have been defined as initial opportunities, with a "theme team" for each. Teams meet annually with the best minds in their fields from Industry, Research, and Schools
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Co-op City - Peter Barricelli
A classroom project involving the construction of scale models of buildings and towns. In addition to teaching ratio and proportion, the process introduces the students to blueprint and CAD (Computer Aided Design) programs.
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A Dice Game - Doug Ensley, Shippensburg University
In this game, two players roll dice repeatedly taking note of who has the higher roll each time. The original number of dice for each person and the number of rolls are set by the user. At the end, the percentage of wins for each player is displayed.
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Exploring Gravity - Becky Magan
A week-long lesson plan for high school students and above, involving an experiment with dropped balls of different weights. Includes video, worksheets, grading rubric, experiment instructions, regression analysis, etc. Sample test data is supplied for
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Federal Statistical Office Germany
The statistics department of the German government. Press releases; socio-economic data, with brief articles and key statistics; tables of recent economic figures; population data for other countries; the purchasing power of the deutschemark. Methodological
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Gaussian Primes - Jim Loy
This is an introduction to Gaussian primes, complex numbers with integers for real and imaginary parts that are divisible by themselves and 1, but no other complex numbers with integer coefficients. This shows calculations of the first few Gaussian primes.
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The Grid Game - Doug Ensley, Shippensburg University
A two-player game where the players alternate marking squares in a grid until there are none left. The first player chooses any single row or column and marks as many squares (at least one) as desired. The second player (the computer in this case) responds
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Guide to the Mandelbrot Set - Paul Derbyshire
Explore the Mandelbrot set with a fractal-drawing program: images of well-known portions of the set, their locations, comments on miniature images of the Mandelbrot set that arise from different formulas, and Julia sets.
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Hyperbolic Angle - Robert G. de Boer
Exposition of a new presentation of the hyperbolic angle, together with hyperbolic functions sinh x and cosh x. The Cognitive Foundation section explains the rationale for this presentation order.
The author writes:
"The argument of hyperbolic functions
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IFORS tutORial Project - Moshe Sniedovich
A library of self-contained modules, each dedicated to a relatively small OR/MS topic, from the International Federation of Operational Research Societies (IFORS). Modules typically contain some of: text, images, computer code, animation, and user interface
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